I more or less do what Gnat and Darcy have suggested. If you anticipate having to stop, even if just for a couple of pedal strokes, you can usually unclip and stop safely. I'd give on other piece of advice. If you are riding with other people, announce that you're going to stop and try not to stop in someone else's path.
@Catrin: I think I know the hill you're talking about. Get out there, girl! You're stronger, the Gunnar is lighter, and you have some super easy gears. There's no reason that you won't be able to make it to the top. Have some confidence!
Live with intention. Walk to the edge. Listen hard. Practice wellness. Play with abandon. Laugh. Choose with no regret. Continue to learn. Appreciate your friends. Do what you love. Live as if this is all there is.
--Mary Anne Radmacher